Metal-molding apparatus



69169 501 v 4 BY 61 1:1176

March 19, 1929. c. H. LYNE 1,706,305

METAL MOLDING APPARATUS Filed March 11, 1927 2 Sheets-$heet 1 WITNESSES v w '61 V OR {ATTORNEY March 19, 1929. c, LYNE 1,706,305 I METAL MOLDI NG APPARATUS Filed March 11, 1927 2 Sheets-Shem INVENTOR ATEURNEY flask, 1

Figure 2 1S a partial side view thereof,-

Patented Mar. 19, 1929.

CHARLES E. LYNE, OF MIAMI, FLORIDA.

METAL-MOLDING ArPAnAr'Us.

Application filed. March 11. 1927. Serial No. 174,613.

M ares'ent invention relates 'enerall to pacity, while my invention proposes a flask or apparatus whereby to form in eiiect a continuousstationary flask of indefinite length and greatcapacity which may be utilized most eiiiciently beneath a travelling crane or line of overhead track; which is' very compact and requires a relatively small amount of sand which has been so badly burnt out by previous use that it is worthless for other molding; and which lends it self to such ready operation that a single inexperienced operator can quickly learn to produce a large tonnage'oi' good castings, free from parting fins and easily cleaned.

In the accompanying drawings which illustrate the best mode so far devisedfor carrying out my invention into practise, and which form a part of this specification:

Figure 1 is anend View of my improved broken away and in section,

Figure 3 is atop plan view of Figure Figure lis a vertical cross section taken substantially on line 14c of Figure 3.

Figure 5 is a similar view taken substantially on line of Figure 3, and I Figure (3 another similar view taken substantially on line 66 of Figure 3, with the patterns removed.

Referring-now to these figures, my invention proposes a flask which includes side walls 10 and 11, hingedly connected along their lower edges as at 12.either to a flask bottom 13 or to hinge lugs set permanently in a concrete floor and the like, since it is intended in practise to aline the side walls in the formation of a flask of indefinite length and which is in effect, one continuous stationary flash of readily expansible ca pacity as will presently appear. At one end of the flask, a wall 1% is detachably mounted, being preferably rigidly engaged by the adjacent ends of the sidewalls 10 and adjacent when tl'ie latter are elevatedto vertical operative positions and engaged and held in suchpositions by any suitable ioundry clamps which I have not shown since they may be of various types and form no part of my invention.

It will be noted that the upper edges of the side walls 10 and 11 haveoutwardly deflected flanges 15 which form convenient tracks for the upper laterally offset wheels or rollers '16 ot' the movable end wall 17. This end wall 17 1nay thus be easily shifted toward and away from the stationary end wall 14 and has upper side portions 17 which laterally outstand for the support of the rollers 16 and which overlie the rails or tracks 15 of the side walls so as to provide for the ready clamping of the movable end wall at various spaced points with respect to V the stationaryend wall 14.

The movable end walll'? has moreover a series of openings 18 by which it also func- 1310118 as a support for the patterns 19 in cooperation with another part to be now described.

A gate former and pattern guide 20 is like the movable end wall '17, adapted to extend transversely between the side. walls'lO and 11 and is provided with upper outstanding arms 21 adapted to rest on the side wall flanges 15: This gate former has upper handles 20'" and a plurality of depending webs 22, eachprovided with a lengthwise series of small openings 22 to receive-the reduced pattern extensions 23, the sand be ing packed between. the webs 22 in operation. v V

A thin stop and vent plate 24 is also employed with a series of depending webs 25 and with upper handles 26 andhas upper hooks 27 by which it may be hung and upper crossbars 28, the latter of which may i'orm'parts of the clamps before referred to;

In the present instance, I have shown the apparatus as used in the casting or sash weights and will so describe its operation, although it'is to be understood that various other articles may be cast with all of the advantages which I claim for my invention.

At the start of operations, the sidewalls- 10 and 11 are raised to'vertical position and securely clamped in connection with the end wall 1 1-. The'movable end wall 17 is then rolled up to within atew inches of the end Wall Which has, of course, been securely clamped in position during the foregoing operation, is then released and rolled back away from the rammed sand and the gate former is placed against the face of the sand.

The movable end Wall is then set and rigidly clamped to the side Walls so that the space between the same and the gate former represents the length of the sash Weights to be cast, proper allowance being made for the chills or cores which INVlll presently describe. A few inches of sand having been packed in the bottom of the casting space thus formed, the first horizontal row of patterns 19 are set in place with their reduced ends in the small openings of the gate tormcr 20 and with their opposite ends projecting through the openings of the end Wall 17. Sand is then rammed between and above the patterns and this operation is repeated until the casting space is full.

The patterns 19 are then Withdrawn through the movable end Wall 17 and the latter released and retracted to permit of the insertion of chills or cores 29 in the ends of the openings after Which the stop and vent plate 24- is inserted so that it covers the chills or cores. It will be manifest that the cores are insertable into the openings by Way of the openings 18 in the movable end Wall after the patterns have been removed. The movable end plate 17 is then clamped a few inches from the stop and vent plate 24 and, With the latter protecting the cores or chills 29, sand is rammed Within the intervening space. The end Wall 17 is then again released and retracted andthe gate former Withdrawn from its previous position and reinserted against the face of the sand, after Which the operation is repeated as previously described' Thus the number of casting spaces is limited-by the length of'the flask only and a Widely elastic or expansible operation is assured, the stop and vent plate upon removal in each instance, forming efl'ective vent holes for the escape of gas when the melted metal is poured i I claim: I

l. A flask having side Walls provided With upper flanges forming rails, a stationary end wall, a movable end Wall having rollers shittable on said rails and having roller supporting portions overlying the rails and adapted to be clamped thereto.

2. In combination, a flask having a stationary end wall, and horizontal flanges along its upper edge, a movable end wall extending transversely Within the flask, laterally extending side portions carried by the upper end of the movable end Wall and overlying the flanges, and anti-friction elements carried by the side portions 'andresting on the flanges.

3. In combination, a flask having a sta tionary end Wall and horizontal flanges along the side Walls at the upper edges of the latter, a movable end Wall extending g transversely Within the flask, laterally extending side port-ions carried by the upper end of the movable end Wall and overly ing the flanges and adapted to be clamped to such flanges to hold the'movable Wall at predetermined positions along the length of the flask, and rollers journalled in the side portions and movable on the flanges.

CHARLES H. LYNE. 

